27381147 has 16 divisors (see below), whose sum is σ = 39471360. Its totient is φ = 16824672.

The previous prime is 27381113. The next prime is 27381149. The reversal of 27381147 is 74118372.

It is a happy number.

It is not a de Polignac number, because 27381147 - 2¹⁵ = 27348379 is a prime.

It is a super-2 number, since 2×27381147² = 1499454422071218, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (27381149) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4383 + ... + 8600.

It is an arithmetic number, because the mean of its divisors is an integer number (2466960).

Almost surely, 2^27381147 is an apocalyptic number.

27381147 is a deficient number, since it is larger than the sum of its proper divisors (12090213).

27381147 is a wasteful number, since it uses less digits than its factorization.

27381147 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13042.

The product of its digits is 9408, while the sum is 33.

The square root of 27381147 is about 5232.6997811837. The cubic root of 27381147 is about 301.4050645935.

The spelling of 27381147 in words is "twenty-seven million, three hundred eighty-one thousand, one hundred forty-seven".